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balloon-framing

Design and installation information to guide the use of our Steel Strong-Wall® shearwalls in balloon-framing applications on concrete foundations.

Steel Strong-Wall Balloon Framing on Concrete Foundations

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<h1>Steel Strong-Wall&reg; Balloon Framing on Concrete Foundations</h1>
  <div class="row">
    <div class="col-md-12">
      <p>Simpson Strong-Tie offers a complete stacked-wall solution for balloon-framing applications. The Steel Strong-Wall option for heights up to 20' combines simplified installation with superior performance.</p>
      <ul>
        <li>Some of the highest loads in the industry</li>
        <li>Same anchor bolt template as single-story installation </li>
        <li>Complete kit available to simplify the connection between the walls</li>
      </ul>
      <p><strong>Material:</strong> Vertical Panel&mdash;10 gauge <br>
        <strong>Finish:</strong> Vertical Panel&mdash;Galvanized Top and Base Plates&mdash;Simpson Strong-Tie gray paint </p>
      <p><strong>Codes:</strong> ICC-ES ESR-1679: <br />
        City of LA Building Code Supplement; <br />
        State of Florida FL5113</p>
    </div>
    <div class="col-md-6">
      <h3 class="h4">Top Wall</h3>
      <strong>Naming Legend</strong>
      <img alt="Naming Legend" src="https://embed.widencdn.net/svg/ssttoolbox/nvzxagakc5/C-L-SW21-51a.svg">
      <h3 class="h4">Bottom Wall</h3>
      <img alt="Example Specification" src="https://embed.widencdn.net/svg/ssttoolbox/4uqjvlwvlx/C-L-SW21-51b.svg">
      <p>Suggested Example Specification: SSW18x8 over SSW18x10-STK</p>
      <h2>Balloon Framing Stacked-Wall Product Data &mdash; Bottom Walls</h2>
      <img alt="Table: Balloon Framing Stacked-Wall Product Data &mdash; Bottom Walls" src="https://embed.widencdn.net/img/ssttoolbox/iv3kr7lpr7/500px@2x/C-L-SW21-51c.png">
      <ol>
        <li>Specific wall combinations provided, see load table. <a href="/contact">Contact Simpson Strong-Tie</a> for additional wall combinations.</li>
        <li><a href="/products/lateral-systems/strong-wall-shearwalls/technical-notes/steel-installation-standard-application-concrete-foundations">See  product data on top walls</a>.</li>
      </ol>
      <h2>Balloon-Framing Wall Connection Kit</h2>
      <img alt="Table: Balloon-Framing Wall Connection Kit" src="https://embed.widencdn.net/img/ssttoolbox/ca4lteku6z/500px@2x/C-L-SW21-51d.png">
      <p>Two heavy hex nuts included with each wall.</p>
      <h2>Wood Block-to-Top Plate Connection</h2>
      <img alt="Wood Block-to-Top Plate Connection" src="https://embed.widencdn.net/img/ssttoolbox/3ybooqtavt/500px@2x/C-L-SW21-51e.png">
      <p>Alternate connectors with equivalent shear capacity may be
          specified by the designer.</p>
    </div>
    <div class="col-md-6">
      <div class="img-panel"> <img alt="Drawing: Stacked-Wall Solution for Balloon Framing" src="https://embed.widencdn.net/svg/ssttoolbox/3rqn55scub/C-L-SW21-51f.svg">
        <div class="image__caption"><strong>Stacked-Wall Solution for Balloon Framing</strong>
           <p>US Patents 8,281,551; 8,689,518</p>
        </div>
       
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-md-12">
	  <h2>Installation</h2>
	  <ul>
	    <li>Do not cut the Steel Strong-Wall or enlarge existing holes, doing so
	      will compromise the performance of the wall.</li>
	    <li>Do not use an impact wrench to tighten nuts on the anchor bolts. </li>
	    <li>Maximum top block height between the Steel Strong-Wall and
	      top plates is 12". <a href="https://www.strongtie.com/search?v=%3Arelevance%3AdrawingFileType%3APDF&tab=drawing&keywordFilter=ssw3">See detail 4/SSW3.</a></li>
	    <li>Full height studs are required for balloon-framed wall installation
	      (by designer). Two 2x6 minimum each side with 0.148" x 3" nails
	      at 16" o.c.</li>
      </ul>
	  </div>
		<div class="col-md-6">
		<img alt="Table: Nail Dimensions" src="https://embed.widencdn.net/img/ssttoolbox/m2km8gqfgc/500px@2x/C-L-SW21-52a.png">
		<p><strong>Fasteners:</strong> Nail dimensions in the table are listed diameter x length.</p>
		<img alt="Drawings: Intallation" src="https://embed.widencdn.net/svg/ssttoolbox/xtqulwj7rq/C-L-SW21-52-b-c-d.svg">
	  </div>
    <div class="col-md-6">
        <div class="img-panel">
            <img alt="Drawing: Balloon Framing Installation" src="https://embed.widencdn.net/svg/ssttoolbox/6vwkxepqvs/C-L-SW21-52e.svg">
		    <div class="image__caption">
                <strong>Balloon Framing Installation</strong>
                <p>US Patents 8,281,551; 8,689,518</p>
            </div>
		</div>
    </div>
  </div>
	<div class="row">
	<div class="col-md-12">
		<img alt="Table: Installation" src="https://embed.widencdn.net/img/ssttoolbox/rmednouak8/500px@2x/C-L-SW21-53a.png">
		<ol>
		  <li>Allowable shear loads and anchor tension forces are applicable to installation on concrete with minimum f'c = 2,500 psi using the ASD basic (Section 1605.3.1) or the alternative basic (Section 1605.3.2) load combinations. Load values include evaluation of
		    bearing stresses on the foundation and do not require further evaluation by the designer.
	      </li>
		  <li>For seismic designs based on the 2021 IBC using R = 6.5. For other codes, use the seismic coefficients corresponding to light-frame bearing walls with wood structural panels or sheet steel panels.
	      </li>
		  <li> Allowable shear, drift, and anchor tension values apply to the nominal wall heights listed and may be linearly interpolated for intermediate heights. </li>
		  <li> Solid shim blocks (12" maximum) shall be used to attain specified nominal wall height. <a href="https://www.strongtie.com/search?v=%3Arelevance%3AdrawingFileType%3APDF&tab=drawing&keywordFilter=ssw3">See detail 4/SSW3</a> for additional details. </li>
		  <li>Full-height studs are required for balloon-framed wall installation, which must be designed for out-of-plane loads in accordance with the applicable code. Two 2x6 minimum are required on each side, fastened together with 0.148" x 3" common nails at 16" on center.</li>
		  <li>Loads are based on a 1,000 lb. maximum axial load acting on the entire panel in combination with the shear load. For shear loads at 2,000 lb. maximum axial load, multiply allowable shears by 0.91 for SSW15x models; no reduction required for other wall models.</li>
		  <li>High-strength anchor bolts are required for anchor tension forces exceeding the <a href="/products/lateral-systems/strong-wall-shearwalls/steel-strong-wall/shearwalls/anchorage-solutions">tabulated allowable load for standard-strength bolts</a>. <a href="/products/lateral-systems/strong-wall-shearwalls/steel-strong-wall/shearwalls/anchor-reinforcement-solutions-grade-beams">See   SSWAB anchor bolt information and anchorage solutions.</a></li>
		  <li>Tabulated anchor tension loads assume no resisting axial load. For anchor tension loads at design shear values and including the effect of axial load, refer to the <a href="https://www2.strongtie.com/webapps/strongwallshearwallselector/?_ga=2.188557931.2106467000.1614011909-1533774003.1497308962">Strong-Wall Shearwall Selector</a>. Drifts at lower design shear may be linearly reduced </li>
      </ol>
		</div>
	</div>

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